Piechocki Corporation manufactures and sells a single product. The company uses units as the measure of activity in its budgets and performance reports. During May, the company budgeted for 8,300 units, but its actual level of activity was 8,350 units. The company has provided the following data concerning the formulas used in its budgeting and its actual results for May: Data used in budgeting Fixed Variable element element per unit $35.80 per month Revenue $ 6.40 12.10 Direct labor Direct materials Manufacturing overhead Selling and administrative expenses Total expenses 40,000 27,100 $67,100 2.10 4.00 $24.60 Actual results for May: Revenue Direct labor Direct materials Manufacturing overhead Selling and administrative expenses 30,630 $297,500 52,870 $ 99,580 51,500 The revenue variance for May would be closest to